--- version: rssac002v4 service: a.root-servers.net start-period: '2022-03-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5152907572 dns-udp-queries-received-ipv6: 1333364038 dns-tcp-queries-received-ipv4: 331636683 dns-tcp-queries-received-ipv6: 43973684 dns-udp-responses-sent-ipv4: 5311032204 dns-udp-responses-sent-ipv6: 1358052625 dns-tcp-responses-sent-ipv4: 329109178 dns-tcp-responses-sent-ipv6: 44030583